Nilfisk-ALTO STEREO TUBE PREAMP User Manual
User's Manual
MICtube
STEREO TUBE PREAMP
www.altoproaudio.com
Version 2.3 September 2005
English
SAFETY RELATED SYMBOLS
CAUTION
RISK OFELECTRIC SHOCK
DO NOTOPEN
This symbol, wherever used, alerts
you to the presence of un-insulated
and dangerous voltages within the
product enclosure. These are voltages
that may be sufficient to constitute the
risk of electric shock or death.
This symbol, wherever used, alerts
you to important operating and maintenance instructions. Please read.
Protective Ground Terminal
AC mains (Alternating Current)
Hazardous Live Terminal
ON:
Denotes the product is turned on.
OFF:
Denotes the product is turned off.
WARNING
Describes precautions that should be
observed to prevent the possibility of
death or injury to the user.
CAUTION
Describes precautions that should be
observed to prevent damage to the
product.
Disposing of this product should
not be placed in municipal waste
and should be separate collection.
WARNING
Power Supply
Ensure that the mains source voltage
(AC outlet) matches the voltage rating
of the product. Failure to do so could
result in damage to the product and
possibly the user.
Unplug the product before electrical storms
occur and when unused for long periods of
time to reduce the risk of electric shock or
fire.
External Connection
Always use proper ready-made insulated
mains cabling (power cord). Failure to do
so could result in shock/death or fire. If
in doubt, seek advice, from a registered
electrician.
Do not Remove any Covers
Within the product are areas where high
voltages may present. To reduce the risk
of electric shock do not remove any
covers unless the AC mains power cord
is removed.
Covers should be removed by qualified
service personnel only.
No user serviceable parts inside.
Fuse
To prevent fire and damage to the
product, use only the recommended
fuse type as indicated in this manual.
Do not short-circuit the fuse holder.
Before replacing the fuse, make sure
that the product is OFF and disconnected
from the AC outlet.
Protective Ground
Before turning the product ON, make sure
that it is connected to Ground. This is to
prevent the risk of electric shock.
Never cut internal or external Ground wires.
Likewise, never remove Ground wiring
from the Protective Ground Terminal.
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Operating Conditions
Always install in accordance with the
manufacturer's instructions.
To avoid the risk of electric shock and
damage, do not subject this product to
any liquid/rain or moisture. Do not use this
product when in close proximity to water.
Do not install this product near any direct
heat source.
Do not block areas of ventilation. Failure
to do so could result in fire.
Keep product away from naked flames.
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions
Follow all instructions
Keep these instructions. Do not discard.
Heed all warnings.
Only use attachments/accessories
specified by the manufacturer.
Power Cord and Plug
Do not tamper with the power cord or plug.
These are designed for your safety.
Do not remove Ground connections!
If the plug does not fit your AC outlet seek
advice from a qualified electrician.
Protect the power cord and plug from any
physical stress to avoid risk of electric shock.
Do not place heavy objects on the power
cord. This could cause electric shock or fire.
Servicing
Refer all servicing to qualified service
personnel only.
Do not perform any servicing other than
those instructions contained within the
User's Manual.
Cleaning
When required, either blow off dust from
the product or use a dry cloth.
Do not use any solvents such as Benzol
or Alcohol.
For safety, keep product clean and free
from dust.
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Preface
Dear Customer,
Thanks for choosing LTO Stereo Tube Preamplifier and thanks for choosing one of
the results of LTO AUDIO TEAM job and researches.
For our LTO AUDIO TEAM, music and sound are more than a job...are first of all
passion and let us say...our obsession!
We have been designing professional audio products for a long time in cooperation with
some of the major brands in the world in the audio field.
The LTO line presents unparalleled analogue and digital products made by Musicians
for Musicians in our R&D centers in Italy, Netherlands, United Kingdom and Taiwan.
The core of our digital audio products is a sophisticated DSP (Digital Sound Processor)
.
and a large range of state of the art algorithms which have been developed by our
Software Team for the last 7 years
Because we are convinced you are the most important member of LTO AUDIO TEAM
and the one confirming the quality of our job, we would like to share with you our work
and our dreams, pay attention to your suggestions and your comments. Following this
idea we create our products and we will create the new ones! From our side, we guarantee you and we will guarantee you also in future the best quality, and the best fruits
of our continuous researches and the best prices.
Our MICtube Stereo Preamplifier is the result of many hours of listening and tests
involving common people, area experts, musicians and technicians. The result of this
effort is a half rack space unit, the heart of which is an extremely low-noise microphone
pre-amp circuit that uses discrete components to produce a highly transparent sound.
Nothing else to add, but that we would like to thank all the people that made the LTO
MICtube Stereo Preamplifier a reality available to our customers, thank our designers
and all the LTO staff, there to make possible the realization of products containing
our idea of music and sound and there to support you, our customers, in the best way,
conscious that you are our best richness.
Thank you very much.
LTO AUDIO TEAM
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TABLE OF CONTENT
1. INTRODUCTION ............................................................................................5
2. FEATURE LIST ..............................................................................................5
3. CONTROL ELEMENTS .................................................................................5
3.1 The Front Panel
a. Guidepost of The Front Panel
b. Supplementary Descriptions
3.2 The Rear Panel
a. Power Supply Connection
b. Analogue Inputs/Outputs
4. INSTALLATION & CONNECTION..................................................................8
4.1 Mains Connection
4.2 Audio Connection
a. Wiring Configuration
b. In Line Connection
4.3. Rack Mounting
5. APPLICATIONS..............................................................................................9
5.1 The MICtube as icrophone reamplifierAM P
5.2 The MICtube as Direct-Injection ox (DI Box)
5.3 The as evel ranslatorAL T
MICtube
AB
6. TECHNICAL SPECIFICATIONS .................................................................11
6.1 Block Diagram
6.2 Specifications
7.WARRANTY ..................................................................................................13
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